15.8.1998, ISEE Preconf Workshop: Integrated Multimedia Exposure Modeling (via CalTOX)

ISEE/ISEA 1998 Conference, Boston, MA

Edward Butler, Kimi Klein (Cal-EPA, Sacramento), Thomas McKone (Lawrence Berkeley Laboratory and UC Berkeley, SPH): Pre-Conference Workshop “Integrated Multimedia Exposure Modeling with Sensitivity and Uncertainty Analysis”

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CalTOX, https://dtsc.ca.gov/caltox/: … innovative spreadsheet model that relates the concentration of a chemical in soil to the risk of an adverse health effect for a person living or working on or near the contaminated soil … computes site-specific health-based soil clean-up concentrations given target risk levels or human health risks given soil concentrations at the site. The … spreadsheet contains a multimedia transport and transformation model that uses equations based on conservation of mass and chemical equilibrium … predicts the time-dependent concentrations of a chemical in the seven environmental compartments of air, water, three soil layers, sediment, and plants at a site … determines the chemical concentration in the exposure media of breathing zone air, drinking water, food, and soil that people inhale, ingest and contact dermally. CalTOX … uses the equations found in the U.S. Environmental Protection Agency Risk Assessment Guidance for Superfund (US EPA RAGS) to estimate exposure and risk … has the capability of conducting Monte Carlo simulations with a spreadsheet add-in program. Used in this way, CalTOX will present a range of risks or health-based soil target clean-up levels that reflect the uncertainty/variability of the estimates.